Medical instrument holding apparatus

Abstract

A medical instrument holding apparatus includes a shaft slidably engaged into a housing and movable into and out of the housing, the housing includes a guiding member engaged with the shaft for guiding and limiting the shaft to slide relative to the housing only and for preventing the shaft from being rotated relative to the housing, a locking device is engaged onto the shaft and includes a positioning member for engaging with an anchoring member of the shaft and for locking the shaft and the housing together, and one or more fasteners are engaged with the housing and the locking device for securing the shaft and the housing together with the locking device.

We claim: 
     
       1. A holding apparatus comprising:
 a supporting mechanism including a base, and including a supporting arm, said supporting arm including a lower portion rotatably attached on said base with a pivot device, said supporting mechanism including a pivot member provided on an upper portion of said supporting arm, 
 a housing provided on said pivot member of said supporting arm, and including a chamber formed in said housing, said housing including an outer free end portion, and including a plurality of screw holes formed in the outer free end portion of the housing, 
 a shaft slidably engaged into said chamber of said housing and movable into and out of said chamber of said housing, said shaft including an anchoring member provided thereon, said anchoring member of said shaft being selected from an outer thread, and said shaft including a longitudinal guiding element formed in an outer peripheral portion thereof, 
 a gripping mechanism disposed on a free end portion of said shaft, 
 said housing including a guiding member extended into said chamber of said housing and slidably engaged with said longitudinal guiding element of said shaft for guiding and limiting said shaft to slide relative to said housing only and for preventing said shaft from being rotated relative to said housing, 
 a locking device including a bore formed therein for slidably receiving and engaging with said shaft, and said locking device including a positioning member for selectively engaging with said anchoring member of said shaft and for locking said shaft and said housing together, said positioning member of said locking device being selected from an inner thread for selectively engaging with said outer thread of said shaft, and 
 a plurality of fasteners engaged with said locking device and engaged with said screw holes that are formed in the outer free end portion of said housing for locking said locking device to said housing and for securing said shaft and said housing together with said locking device. 
 
     
     
       2. The holding apparatus according to  claim 1 , wherein said screw holes that are formed in the outer free end portion of said housing and arranged equally spaced from each other.